Lining for journal-bearings.



G. N. & S. E. SHOOK. LINING FOR JOURNAL BEARINGS.

APPLICATION FILED JUNE 2, 1904.

34M) owl tow UNITED sTATEs PATENT OFFICE.

GEORGE N. SHOOK. OF AKRON, AND SOLOMON E. SHOOK, OF CUYAHOGA FALLS,OHIO.

LINING FOR JOURNAL-BEARINGS.

Specification of Letters Patent.

Patented Dec, 25, 1906.

Application filed June 2, 1904. Serial No- 210,770-

To roll 10/1/0712 it may concern:

Be it known that we, GEORGE N. SnooK, a n sident of Akron, and SOLOMONE. 811001;, a resident of Cuyahoga Falls, in the county of Summit andState of Ohio, citizens of the United States, have invented certain newand useful Improvements in Linings for Journal-Bearings, of which thefollowing is a specification.

This invention relates to linings for journal-bearings; and itsprincipal object is to provide a lining which can be used for a longperiod of time as a bearing for a journal running either at high or lowspeed and remain cool and run substantially without wear and with butslight attention under all conditions of use.

We have found that journal-bearlngs, such as shaft-bearings, may beprovided with an antifriction-lining which will form a perfectly smoothbearing-surface and remain cool even when the journal or shaft is run athigh speeds for long periods of time. These results we accomplish bysubstituting for Babbitt metal and other metallic antifrictioncompositions for lining j ournal-bearings a lining which is non-metallicand has practically no tendency to become heated when a' journal is runat high speed in contact therewith and by subjecting this non-metallicnon-heating body or lining to the action of a suitable compoundcontaining constituents for glazing the bearing-surface of the liningand for abstracting the heat developed'by the rotation of the journaland absorbing and dissipating the same without heating up the bodyportion of the lining.

The drawing illustrates in perspective a lining for journal-bearingswhich embodies our invention.

For'the body of the lining we prefer to make use of strawboard but anyequivalent non-metallic body which is a poor conductor of heat and hassufficient strength to sup ort the journal properly may be employed.This strawboard is subjected at a proper temperature to the action of asuitable composition capable of imparting lubricating, glazing, andheat-abstracting properties to the straw board or e uivalent material.As the lubricating me 'um we refer to make use of a drying-oil, such asinseed-oil, which when dry forms a lubricating coating or lubricatingglaze on the bearing-surface of the body or lining proper and is alsocapable of impregnating the strawboard throughout the same, so as toassure thorough lubrication thereof. For the purpose of abstracting suchheat as may be developed by a journal running in contact with a liningwhich is itself a poor conductor of heat we prefer to impregnate thelining or strawboard with a suitable cooling medium, such as ordinarysalt, the action of which for such purpose is well understood. In orderto give the necessary body to the glaze which is formed on thebearing-surface by the action of a journal in contact with the lining ofthe bearin We also prefer to add to the lining a smal percentage oflitharge, which readily forms a smooth and substantial glaze. Inaddition to these substances we also prefer to employ a small uantity ofa binder, such as gumshellac, w hich serves to stiffen and strengthenthe strawboard. All of these substances are preferably dissolved andmixed, the preferred proportions of theingredients being one uart oflinseed-oil, one-fourth of. a poun of salt, one-eighth of an ounce oflitharge, and one-fourth of an ounce of um-shellac. Alcohol orturpentine should first be added to the shellac to soften it, so that itwill be in a jelly-like state and will mix with the other ingredientsmore readily. Preferably the salt is first dissolved in hot water toform a saturated solution and is then added to the linseed-oil, thelitharge and the gumshellac being also added, and the mixture thenheated to a temperature of about 232 centigrade, after which thestrawboard is dipped in the solution while the solution is at thistemperature. As soon as the surplus liquid is drained from the body orlinin of strawboard or equivalent material such inin is ready for use.

Iiong use of journal bearings rovided with linings made in this manneras fully demonstratedthe utility of such material. The bearing-surfaceof such a lining becomes glazed soon after it is subjected to use, and aperfectly smooth bearing-surface is formed, on which the friction whenrunning in contact with a journal is reduced to a minimum. The smoothbearing-surface formed by the conjoint glazing of the salt, thelitharge, and the oil remains smooth and shows practically no signs ofwear after it. has once been perfectly glazed b use. Moreover, thebearing remains perfectly cool and requires but a few drops of oil atintervals of a week or more in order to maintain it in erfect condition.This is due partly to t e fact that the body of the lining is a poorconductor of heat, partly to the fact that a non-heating and practicallyfrictionless glaze is formed on and constitutes the bearing-surface ofthe lining, and partly to the fact that such heat as is developed isquickly abstracted and is absorbed and dissipated, owing to the presenceof thesalt, which when heated gives off a portion of the water in whichit was dissolved and causes the bearing-surface to soften slightly andreduce the friction, and this water being spread over a great area ofjournalsurface abstracts and dissipates the heat, and, cooling quickly,is taken up again by the dissolved salt. It has also been found that incase any grit gets into the bearing the heating action resulting fromthe presence of the grit causes the lining to be softened sufi"1 cientlyto take up the grit, and the grit becomes embedded in the body of thelining below the wearingsurfacethat is, outside the bearing-surfacewhichcloses over again and renews its frictionless glaze at thebearing-surface. Any small foreign substance which enters the bearing istaken up and embedded in this manner without affecting the action of thebearing except momentarily while such substance is being embedded in thelining.

Alining of this type is entirely different in its action from a metalliclining of the usual antifriction type and besides is much more readilyplaced in position and brought to a erfect bearing-surface, it beingwell known that with the ordinary antifriction metal it is necessary tomelt the metal and pour it into the journal-box, which if screwed up tootightly causes overheating of the bearing and melting of theantifriction metal, which then has to be remelted and poured again.

What we claim is l. A glazed and lubricated non-heating lining forjournal-bearings, said linin comprising fibrous material substantia lyas specified impregnated with lubricating and glazing substances andsodium chlorid, and a binder.

2. A glazed and lubricated non-heating lining for j ournal-bearings,said lining comprising fibrous material substantially as describedimpregnated with a drying-oil, sodium chlorid, litharge and a binder.

Signed at Akron, in the county of Summit and State of Ohio, this 28thday of May, A. D. 1904.

GEORGE N. SHOOK. SOLOMON E. SHOOK. Witnesses:

H. J. BINGHAM, ARTHUR SHARP.

